7140SA35JI

Overview

The Renesas Electronics Corporation 7140SA35JI is an asynchronous dual-port static random-access memory (SRAM) integrated circuit. It provides a storage capacity of 8 kilobits, organized as 1K words by 8 bits. The device features a parallel interface with a maximum access time and write cycle time of 35 nanoseconds. It operates within a supply voltage range of 4.5V to 5.5V and supports surface-mount installation in a 52-lead Plastic Leadless Chip Carrier (PLCC) package measuring 19.13mm x 19.13mm. The component is rated for commercial operating temperatures between 0°C and 70°C.

Feature Summary

• Dual-port architecture enabling independent simultaneous access from two separate processors or systems.

Applications

• High-speed data buffering in communication equipment.

Procurement Notes

Verify the exact suffix designation against official manufacturer documentation, as variations exist. Confirm RoHS compliance status, as some variants are non-compliant. Check current production status, as this series may be discontinued. Ensure the specific package type matches the design requirements before procurement.

Selection Notes

Select this component when a small-capacity, high-speed dual-port memory solution is required for parallel bus architectures. Verify that the 35ns speed meets system timing constraints. Ensure the 52-PLCC package fits the available PCB real estate and soldering capabilities.

Part Context

This part belongs to the 7140SA family of asynchronous dual-port SRAMs manufactured by Renesas Electronics. These devices are designed for applications requiring fast, independent read/write operations from two ports without complex arbitration logic.

Replacement Considerations

Consult official datasheets for pin-compatible alternatives within the same family. Verify electrical specifications and package dimensions match exactly before substitution.